On Sat, 17 Apr 2021 19:19:21 -0400, micky wrote:

It turns out if your car radio has a jack in the back to connect a CD
changer or satellite receiver, you can, instead or even in addition to,
connect a device to give you AUX and Bluetooth input, and hands-free
phone calls. Assuming you have a cell phone.

Many OEM Toyota head units have that capability, for example. I added an
AUX input to a 2002 Highlander and a Tacoma pickup, not sure of the model
year of that one. It was all plug and play, other than drilling a hole on
the plastic of the lower dash to mount the AUX input plug. You could also
just let a cable hang down but I wanted a more finished look.

[snip]